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(No-Model.) I 3 H. VAN H'OEVENBERG'H.

MEANSIFOR PRINTING-PROM EITHER OFJTWO TYPE WHEELS IN PRINTINGTELEGRAPHS.

No. 293,928. Patented: Feb. 19, 1884.

Ely- M M1 WITNESSES INVENTIOR his attorneys Henry Vangoez/e e15 n mumsIhuwiilhugmpher. Washmglon. n. c.

UNITED STATES ATENT OFFICE.

HENRY VAN HOEVENBERGH, OF ELIZABETH, NEXV JERSEY.

MEANS FOR PRINTING FROM EITHER OF TWO TYPE-WHEELS INPRlNTlNG-TELEGRAPHS.

SPECIFICATION forming part of Letters Patent No. 293,928, dated February19, 1884.

Application filed September 24, 1883.

To all whom, it may concern.-

Be it known that I, HENRY VAN HOEVEN- BERGH, a citizen of the UnitedStates, residing in Elizabeth, in the county of Union and State of NewJersey, have invented certain new and useful Improvements in Printing-Telegraphs, of which the following is a specification.

My invention relates to certain improvements in the construction ofdevices for determining from which particular one of two type-wheels ina printing-telegraph receivinginstrument an impression shall be taken.

The object of the invention is to so organize the apparatus that thedesired impressions may be taken from either of the type-wheels at adistant station by means of electric currents transmitted over a singlemain-line conductor without the aid of complicated mechanism. I

The invention consists in constructing an instrument with a doubleelectro-magnet for controlling the movements of an escapement device andtwo additional independent electro-magnets, which are respectivelyadapted to actuate a press-lever and to determine the position of aprinting-platen of peculiar construction. This platen is virtually adouble one, consisting of two single platens united at an angle witheach other and situated in dif ferent planes, the one being located inthe plane of one of two parallel type-wheels and the other platen in theplane of the other typewheel. When the armature-lever, which is employedfor determining the position of the double platen, is remote from thepoles of its electro-magnet, one of the} platen-faces will be presentedto the corresponding type-wheel, andif the press-lever be then actuatedit will cause an impression to be taken from that type-wheel in theusual manner, the other platen-face meantime remaining at such an anglewith reference to its type-wheel that no impression will be takentherefrom. \Vhen, on the contrary, the armature is attracted to thepoles of its magnet, the double platen will be turned, by means ofsuitable intervening mechanism, so that the second platen-face will bepresented to its type-wheel, and the .first platen will be at such anangle that no impression will be taken from the first type wheel.

(No model.)

longed current of the same strength as the alternating currents. Ineither event the current employed for this purpose should not be ofsufficient strength to actuate the armature of the platen-controllingmagnet; but this armature is so constructed or adjusted that it willrespond only to currents of increased strength, such currents being alsoadapted to actuate the press-lever. By means of currents of this classimpressions may be takenfrom the second type-wheel.

In the accompanying drawings, which illustrate my invention, Figure l isan elevation, showing the organization of the apparatus; and Fig. 2 is aperspective view illustrating the construction of the platen.

Referring to the figures, A and A represent two type-wheels, of usualconstruction, placed side by side upon a shaft, a, the periphery of thetype-wheel A, for instance, being engraved-with type representingnumerals, while that of the type-wheel A is engraved with letters.

Carried upon the shaft to is a scape-wheel, B, normally tending, throughthe stress of a spring or weight, to revolve continuously in thedirection indicated by the arrow. An anchor-escapement, O, of ordinaryconstruction, regulates or controls the movements of the wheel B byengaging teeth alternately upon opposite sides of the same. Thenecessary vibrations of the escapement-pallets are occasioned by anelectro-magnet, M M, acting un der the influence of alternating electriccurrents traversing its coils, to impel a polarized armature, D, to andfro in a manner well understood. The type-wheels are thus simultaneouslycaused to advance step by step and. to successively present theindividual type upon their peripheries to a combined or doubleprinting-platen, E. The double platen E consists of two single platens,e and c rigidly secured to each other, and respectively designed to takeimpressions from the type- 2 eeaees wheels A and A The combined platenthus I proximity to its type-wheel, I prefer to so conformed is pivotedin a bracket upon the armature-lever F of a press-magnet, 1?. The twoparts of the same are, however, united at an angle, as best seen in Fig.2, so that while the printing-face of one of the platens-w", forinstanceis presented to its type-wheel A, the face of the other platenwill be in such a position as not to come in contact with its typewheelA during the upward movement of the press-lever F, and vice versa.

For the purpose of controlling the position of the double platen E, aspecial electromagnet, R, is provided. The armature-lever H of thismagnet is coupled by means of a pivoted link, J, with an arm, 0, uponthe platen E. hen the armature-lever is away from the poles of itseleetromagnet R, the platen will be caused to assume the position shownin full lines in the drawings, with the part 0* facing the type-wheel AWVhen, however, a current of sufficient strength to attract its armatureh to its poles traverses the coils of the electromagnet R, thearmature-lever and platen will be moved into the position shown indotted lines, Fig. 1, the part 0 being in the position to causeimpressions to be taken from the other type-wheel, A.

The printing-magnet P may be constructed either to respond to currentsof greater strength than those employed for actuating the escapement G,or to a simple prolongation of one of the alternating pulsations, whilethe. armature of the electro-niagnet R will respond only to currents ofa strength still greater than those required to actuate the presslever.The latter, however, will also respond likewise to the strongestcurrents.

It will thus be seen that when it is desiredto print characters from thetype-wheelA the type-wheels should be revolved until the desiredcharacter is opposite the platen, when a current of the characterrequired to actuate the lever F should be transmitted through the coilsof the magnet P. If, however, an impression should be desired from thetypewheel A after it has been arrested in the proper position, a currentof the strength req uisite to actuate the lever H of the electromagnet Bshould be transmitted through its coils. The platen will be caused toassume its second position, and the press-lever will be actuatedthereby.

I have shown and described the several electro-magnets as included in asingle conductor, though it is evident that a second conductor might, ifpreferred, be employed for the electro-magnet R.

In order to insure the platen being in position to print from thetype-wheel A under the influence of a strong current before thepress-lever has carried the sameinto too close struct the electro-magnetR that it will acquire the full degree of magnetization of which it issusceptible under the influence of a current of given strength somewhatmore quickly than will the electro-magnet P. In this manner thearmature-lever I-I may be caused to assume its forward position underthe influence of a current of the strength required to actuate it beforethe press-lever responds to the action of the same current.

I claim as my invention- 1. The combination, substantially ashereinbefore set forth, of two type-wheels revolving in parallel planes,two platen-faces rigidly united with each other but situated indifferent planes, and supported upon a common axis, and an electromagnetserving, when vitalized, to cause one of said platen-faces to confrontone type-wheel, and when not vitalized to permit the other platen toconfront the other type wheel.

2. The combination,.substantially as hereinbefore set forth, of twotype-wheels, means, substantially such as described, for imparting anintermittent advance movement to said type-wheels, a printing-magnet,its armature and armature-lever, two 1)11t6l]f2tCQS united with eachother but situated in different planes, and an electro-magnet actingwhen vitalized to present one of said platen-faces to one typeparallelplanes, two platen-faces situated, re:

spectively, in the planes of said type-wheels, and supported upon anindependent axis parallel with said type-wheel axis, an electromagnet,its armature and armature-lever, and a link-connecting said lever withthe platens, whereby the latter may be turned upon their common axis bythe toand-fro movements of said lever.

4c. The combination, substantially as hereinbefore set forth, of atype-wheel axis, two type-wheels fixed thereupon and revolving inparallel planes, a printing-magnet, its armature and armature-lever, twoplaten-faces supported upon said armature-lever upon a common axisparallel to said type-wheel axis, and an independent electro-magnet forcontrolling the angular position of said platen-faces.

In testimony whereof I have hereunto subscribed my name this 19th day ofSeptember, A. D. 1883.

HENRY VAN HOEVENBERGH.

Vitnesses:

DANIEL XV. EDGECOMB, CHARLES r TERRY.

IIO

